Recent years have seen the development of powerful tools for verifying hardware and software systems and increasing interest in that technology from major companies. Students need a basic formal training which allows them to gain sufficient proficiency in using logic-based verification methods. This book addresses these needs by providing a sound basis in logic and an introduction to the logical frameworks used in modelling specifying and verifying computer systems. It provides a simple and clear presentation covering propositional and predicate logic and some specialized logics used for reasoning about the correctness of computer systems. The authors introduce a carefully chosen core of essential terminology: further technicalities are introduced only when necessary. Numerous examples are given as well as a full exposition of a fast-growing technique for modelling and verifying computer systems known as symbolic model checking.